package cn.chenc.framework.security.util;

import cn.chenc.framework.core.exception.CustomException;
import cn.chenc.framework.core.model.response.CustomCode;
import cn.chenc.framework.security.model.SecurityLoginUser;
import org.springframework.http.HttpStatus;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;

/**
 * 　@description: Security工具类
 * 　@author secret
 * 　@date 2021/4/1 14:31
 *
 */
public class SecurityUtil {

    /**
     * 获取用户账户
     **/
    public static String getUsername() {
        try {
            return getLoginUser().getUsername();
        }
        catch (Exception e) {
            throw new CustomException(new CustomCode(false,HttpStatus.UNAUTHORIZED.value(),"获取用户账户异常"));
        }
    }

    /**
     * 获取用户
     **/
    public static SecurityLoginUser getLoginUser() {
        try {
            return (SecurityLoginUser)getAuthentication().getPrincipal();
        }
        catch (Exception e) {
            throw new CustomException(new CustomCode(false,HttpStatus.UNAUTHORIZED.value(),"获取用户信息异常"));
        }
    }

    /**
     * 获取Authentication
     */
    public static Authentication getAuthentication() {
        return SecurityContextHolder.getContext().getAuthentication();
    }

    /**
     * 生成BCryptPasswordEncoder密码
     *
     * @param password 密码
     * @return 加密字符串
     */
    public static String encryptPassword(String password) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.encode(password);
    }

    /**
     * 判断密码是否相同
     *
     * @param rawPassword 真实密码
     * @param encodedPassword 加密后字符
     * @return 结果
     */
    public static boolean matchesPassword(String rawPassword, String encodedPassword) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.matches(rawPassword, encodedPassword);
    }

    /**
     * 是否为管理员 默认管理员ID为1
     *
     * @param userId 用户ID
     * @return 结果
     */
    public static boolean isAdmin(Long userId) {
        return userId != null && 1L == userId;
    }

}
